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What is the relationship between sine and cosine of the complementary angles?

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Anonymous

 ∙ 12y ago
Updated: 12/27/2022

sin(x) = cos(90° - x)

cos(x) = sin(90° - x)

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Wiki User

 ∙ 12y ago

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Continue Learning about Trigonometry

What is cosine 0?

Cosine (0) = 1 Sin(0) = 0 The sine and cosine curves are two intertwining curves, that complement each other, hence the words 'Sine (Curve) and Cosine ( COmplementary Curve).

What is the relationship between the tan and cot?

Cotangent is 1 / tangent. Since tangent is sine / cosine, cotangent is cosine / sine.

How are sine and cosine and secant related?

Sine and cosine are cofunctions, which means that their angles are complementary. Consequently, sin (90° - x) = cos x. Secant is the reciprocal of cosine so that sec x = 1/(cos x). Knowing these properties of trigonometric functions, among others, will really help you in other advance math courses.

What are the measure of the angles in quadrant 1?

The angles in quadrant one measure between 0 degrees and 90 degrees. In radians, that's between 0 and pi/2. Quadrant one is the quadrant where both X and Y (or cosine theta and sine theta) are positive.

What is cos on a calculator mean?

Cos is short for Cosine ( Complementary Sine) Similrly Sin is short for Sine Tan is short for Tangent.

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